
Adição e Subtração com números inteiros
Authored by Marcos Leopoldino
Mathematics
7th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Um camelô fez quatro vendas: na primeira teve prejuízo de R$4,00, na segunda teve prejuízo de R$11,00, na terceira teve lucro de R$13,00 e na última teve lucro de R$5,00. Ao calcular o saldo resultante desses quatro negócios, assinale qual das alternativas é a correta.
4 – 11 + 13 + 5 = 11
– 4 – 11 – 13 + 5 = -23
– 4 + (–11) + 13 + 5 = 3
– 4 – (–11) + 13 + 5 = 25
2.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Um termômetro está marcando –2°C em uma cidade. Se a temperatura subir 6°C, quantos graus marcará o termômetro?
4ºC
-8ºC
-4ºC
8ºC
3.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
A temperatura num freezer era de –15°C. Faltou energia elétrica e a temperatura subiu 6°C. A que temperatura se encontra agora o freezer?
-21ºC
-9ºC
21ºC
9ºC
4.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Um avião encontra-se a 350 metros de altitude e um submarino a 100 metros de profundidade. Quantos metros separam o avião do submarino?
250 metros
350 metros
100 metros
450 metros
Answer explanation
a altitude do avião é positiva, pois está acima do nível do mar. Já o submarino está debaixo do nível do mar, portanto deve ser um número negativo, sendo assim,
fazendo a diferença, temos: 350 - (-100) = 350 + 100 = 450 metros.
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
No início do mês, o saldo bancário de João era de R$841,00. Durante o mês, ele pagou contas com dois cheques: um no valor de R$734,00 e outro de R$219,00. Também fez um depósito na sua conta no valor de R$500,00. Qual o saldo de João no final desse mês?
R$388,00
R$ -112,00
R$ 2.294,00
R$ -612,00
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